21303000023344 has 120 divisors (see below), whose sum is σ = 47971066722192. Its totient is φ = 9127026155520.

The previous prime is 21303000023287. The next prime is 21303000023381. The reversal of 21303000023344 is 44332000030312.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 181479 + ... + 6529849.

Almost surely, 2^{21303000023344} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21303000023344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23985533361096).

21303000023344 is an abundant number, since it is smaller than the sum of its proper divisors (26668066698848).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21303000023344 is a wasteful number, since it uses less digits than its factorization.

21303000023344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6348495 (or 6348476 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 25.

Adding to 21303000023344 its reverse (44332000030312), we get a palindrome (65635000053656).

The spelling of 21303000023344 in words is "twenty-one trillion, three hundred three billion, twenty-three thousand, three hundred forty-four".